基于矩阵变换器的AC/DC变换器  

AC/DC Converter Based on Matrix Converter

作　　者：文锋[1] 姜久春[1] 郭慧萍[1] 

机构地区：[1]北京交通大学电气工程学院,北京100044

出　　处：《电工技术学报》2009年第3期128-131,共4页Transactions of China Electrotechnical Society

摘　　要：对传统的三相/三相矩阵变换器进行变换,得到一种新型的AC/DC变换器拓扑,并对该电路的工作原理进行了分析,通过在变换器的高频部分加入变压器,既实现了输入和输出的电气隔离,又减小了系统的重量和体积。本文对所采用的基于输入电压的双线电压调制策略机理进行了详细的分析,推导了在该调制策略下的输入电流和输出电压的表达式,说明采用该调制策略能实现三相交流输入侧电流正弦和单位功率因数,输出电压与调制指数之间存在线性的关系。采用MOTOROLA的16位微处理器和CPLD协调控制制作了一台样机,验证了理论和控制方法的正确性和可行性。In this paper, a new type AC/DC converter topology is achieved by transforming traditional 3-phase to 3-phase matrix converter. Operating principle of this converter is analyzed. High frequency transformer realizes electrical isolation between input and output, and also reduces volume and weight of the whole system. The adopted two-line-voltage modulation strategy is analyzed in detail; expressions of input current and output voltage under this modulation strategy are derived, which shows that the modulation strategy adopted in this paper can realize sine waveform of 3 phase input currents and also unity power factor, meanwhile, output voltage is proportional to modulation index. In the end, a prototype is made by using a 16 bit MCU of MOTOROLA and a CPLD, validate correctness and feasibility of the theory and control strategy proposed in this paper.

关 键 词：矩阵变换器 AC/DC变换器 双线电压调制 换流 

分 类 号：TM464[电气工程—电器]